TY  - BOOK
AU  - 
AU  - Helwig, Floy,
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 838511732
SN  - 2
PY  - 1979///];copyright 1979.46
CY  - New York
PB  - Appleton-Century-Crofts
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Pediatrics
KW  - Programmed Instruction
N1  - Includes bibliographies; 5
ER  -